LOANS

Loans as of September 30, 2017, and December 31, 2016, were as follows, in thousands:



	September 30, 2017			December 31, 2016
Loans receivable held to maturity:
Commercial	$	1,613,903		$	1,287,265
Commercial real estate	3,163,953			2,538,582
Agricultural and agricultural real estate	511,764			489,318
Residential real estate	635,611			617,924
Consumer	450,088			420,613
Gross loans receivable held to maturity	6,375,319			5,353,702
Unearned discount	(605		)	(699		)
Deferred loan fees	(1,299		)	(1,284		)
Total net loans receivable held to maturity	6,373,415			5,351,719
Allowance for loan losses	(54,885		)	(54,324		)
Loans receivable, net	$	6,318,530		$	5,297,395

Heartland has certain lending policies and procedures in place that are designed to provide for an acceptable level of credit risk. The board of directors reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management and the board with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies, nonperforming loans and potential problem loans. Diversification in the loan portfolio is also a means of managing risk associated with fluctuations in economic conditions.

The commercial and commercial real estate loan portfolio includes a wide range of business loans, including lines of credit for working capital and operational purposes and term loans for the acquisition of equipment and real estate. Although most loans are made on a secured basis, loans may be made on an unsecured basis if warranted by the overall financial condition of the borrower. Terms of commercial business loans generally range from one to five years. Commercial loans are primarily made based on the identified cash flow of the borrower and secondarily on the underlying collateral provided by the borrower. The collateral that Heartland requires for most of these loans is based upon the discounted market value of the collateral. The primary repayment risks of commercial loans are that the cash flow of the borrowers may be unpredictable, and the collateral securing these loans may fluctuate in value. Heartland seeks to minimize these risks in a variety of ways. The underwriting analysis includes credit verification, analysis of global cash flows, appraisals and a review of the financial condition of the borrower. Personal guarantees are frequently required as a tertiary form of repayment. In addition, when underwriting loans for commercial real estate, careful consideration is given to the property's operating history, future operating projections, current and projected occupancy, location and physical condition. Heartland also utilizes government guaranteed lending through the U.S. Small Business Administration and the U.S. Department of Agriculture's Rural Development Business and Industry Program to assist customers with longer-term funding and to reduce risk.

Agricultural loans, many of which are secured by crops, machinery and real estate, are provided to finance capital improvements and farm operations as well as acquisitions of livestock and machinery. Agricultural loans present unique credit risks relating to adverse weather conditions, loss of livestock due to disease or other reasons, declines in market prices for agricultural products and the impact of government regulations. The ultimate repayment of agricultural loans is dependent upon the profitable operation or management of the agricultural entity. In underwriting agricultural loans, lending personnel work closely with their customers to review budgets and cash flow projections for crop production for the ensuing year. These budgets and cash flow projections are monitored closely during the year and reviewed with the customers at least annually. Lending personnel also work closely with governmental agencies, including the Farm Service Agency, to help agricultural customers obtain credit enhancement products such as loan guarantees or interest assistance.

Heartland originates first-lien, adjustable-rate and fixed-rate, one-to-four-family residential real estate loans for the construction, purchase or refinancing of a single family residential property. These loans are principally collateralized by owner-occupied properties and are amortized over 10 to 30 years. Heartland typically sells longer-term, low-rate, residential mortgage loans in the secondary market with servicing rights retained. This practice allows Heartland to better manage interest rate risk and liquidity risk. The Heartland bank subsidiaries participate in lending programs sponsored by U.S. government agencies such as Veterans Administration and Federal Home Administration when justified by market conditions. As of September 30, 2017, Heartland had $4.8 million of loans secured by residential real estate property that were in the process of foreclosure.

Consumer lending includes motor vehicle, home improvement, home equity and small personal credit lines. Consumer loans typically have shorter terms, lower balances, higher yields and higher risks of default than one-to-four-family residential mortgage loans. Consumer loan collections are dependent on the borrower's continuing financial stability, and are therefore more likely to be affected by adverse personal circumstances. Risk is reduced through underwriting criteria, which include credit verification, appraisals, a review of the borrower's financial condition, and personal cash flows. A security interest, with title insurance when necessary, is taken in the underlying real estate. Heartland's consumer finance subsidiaries, Citizens Finance Co. and Citizens Finance of Illinois Co., typically lend to borrowers with past credit problems or limited credit histories, and these loans comprise approximately 17% of Heartland's total consumer loan portfolio.

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Heartland’s policy is to discontinue the accrual of interest income on any loan when, in the opinion of management, there is a reasonable doubt as to the timely collection of the interest and principal, normally when a loan is 90 days past due. When interest accruals are deemed uncollectible, interest credited to income in the current year is reversed and interest accrued in prior years is charged to the allowance for loan losses. Nonaccrual loans are returned to an accrual status when, in the opinion of management, the financial position of the borrower indicates that there is no longer any reasonable doubt as to the timely payment of interest and principal.

Under Heartland’s credit practices, a loan is impaired when, based on current information and events, it is probable that Heartland will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loan impairment is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, except where more practical, impairment is measured at the observable market price of the loan or the fair value of the collateral if the loan is collateral dependent.

The following table shows the balance in the allowance for loan losses at September 30, 2017, and December 31, 2016, and the related loan balances, disaggregated on the basis of impairment methodology, in thousands. Loans evaluated under ASC 310-10-35 include loans on nonaccrual status and troubled debt restructurings, which are individually evaluated for impairment, and other impaired loans deemed to have similar risk characteristics. All other loans are collectively evaluated for impairment under ASC 450-20. Heartland has made no significant changes to the accounting for the allowance for loan losses during 2017.



	Allowance For Loan Losses						Gross Loans Receivable Held to Maturity
	Ending Balance Under ASC 310-10-35		Ending Balance Under ASC 450-20		Total		Ending Balance Evaluated for Impairment Under ASC 310-10-35		Ending Balance Evaluated for Impairment Under ASC 450-20		Total
September 30, 2017
Commercial	$	2,166	$	14,804	$	16,970	$	6,957	$	1,606,946	$	1,613,903
Commercial real estate	864		19,676		20,540		27,943		3,136,010		3,163,953
Agricultural and agricultural real estate	2,353		3,774		6,127		12,792		498,972		511,764
Residential real estate	393		1,873		2,266		29,833		605,778		635,611
Consumer	1,267		7,715		8,982		6,524		443,564		450,088
Total	$	7,043	$	47,842	$	54,885	$	84,049	$	6,291,270	$	6,375,319
December 31, 2016
Commercial	$	1,318	$	13,447	$	14,765	$	3,712	$	1,283,553	$	1,287,265
Commercial real estate	2,671		21,648		24,319		45,217		2,493,365		2,538,582
Agricultural and agricultural real estate	816		3,394		4,210		16,730		472,588		489,318
Residential real estate	497		1,766		2,263		25,726		592,198		617,924
Consumer	1,451		7,316		8,767		5,988		414,625		420,613
Total	$	6,753	$	47,571	$	54,324	$	97,373	$	5,256,329	$	5,353,702

The following table presents nonaccrual loans, accruing loans past due 90 days or more and troubled debt restructured loans at September 30, 2017, and December 31, 2016, in thousands:



	September 30, 2017		December 31, 2016
Nonaccrual loans	$	59,451	$	62,591
Nonaccrual troubled debt restructured loans	4,005		1,708
Total nonaccrual loans	$	63,456	$	64,299
Accruing loans past due 90 days or more	$	2,348	$	86
Performing troubled debt restructured loans	$	10,040	$	10,380

The following tables provide information on troubled debt restructured loans that were modified during the three- and nine-month periods ended September 30, 2017, and September 30, 2016, dollars in thousands:



	Three Months Ended September 30,
	2017					2016
	Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment
Commercial	—	$	—	$	—	—	$	—	$	—
Commercial real estate	—	—		—		—	—		—
Total commercial and commercial real estate	—	—		—		—	—		—
Agricultural and agricultural real estate	—	—		—		—	—		—
Residential real estate	8	1,174		1,174		5	651		651
Consumer	—	—		—		—	—		—
Total	8	$	1,174	$	1,174	5	$	651	$	651



	Nine Months Ended September 30,
	2017					2016
	Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment
Commercial	3	$	131	$	131	1	$	100	$	100
Commercial real estate	—	—		—		1	179		179
Total commercial and commercial real estate	3	131		131		2	279		279
Agricultural and agricultural real estate	—	—		—		—	—		—
Residential real estate	22	2,977		2,977		5	651		651
Consumer	—	—		—		—	—		—
Total	25	$	3,108	$	3,108	7	$	930	$	930

The pre-modification and post-modification recorded investment represents amounts as of the date of loan modification. Since the modifications of these loans have been only interest rate concessions and term extensions, not principal reductions, the pre-modification and post-modification recorded investment amounts are the same. At September 30, 2017, there were no commitments to extend credit to any of the borrowers with an existing troubled debt restructuring.

The following table shows troubled debt restructured loans for which there was a payment default during the three- and nine-month periods ended September 30, 2017, and September 30, 2016, that had been modified during the twelve-month period prior to default, in thousands:



	With Payment Defaults During the Following Periods
	Three Months Ended September 30,
	2017			2016
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial	—	$	—	—	$	—
Commercial real estate	—	—		—	—
Total commercial and commercial real estate	—	—		—	—
Agricultural and agricultural real estate	—	—		—	—
Residential real estate	5	1,221		—	—
Consumer	—	—		—	—
Total	5	$	1,221	—	$	—



	With Payment Defaults During the Following Periods
	Nine Months Ended September 30,
	2017			2016
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial	—	$	—	1	$	95
Commercial real estate	—	—		—	—
Total commercial and commercial real estate	—	—		1	95
Agricultural and agricultural real estate	—	—		—	—
Residential real estate	8	1,480		—	—
Consumer	—	—		—	—
Total	8	$	1,480	1	$	95

Heartland's internal rating system is a series of grades reflecting management's risk assessment, based on its analysis of the borrower's financial condition. The "pass" category consists of all loans that are not in the "nonpass" category, categorized into a range of loan grades that reflect increasing, though still acceptable, risk. Movement of risk through the various grade levels in the pass category is monitored for early identification of credit deterioration. The "nonpass" category consists of special mention, substandard, doubtful and loss loans. The "special mention" rating is attached to loans where the borrower exhibits negative trends in financial circumstances due to borrower specific or systemic conditions that, if left uncorrected, threaten the borrower's capacity to meet its debt obligations. The borrower is believed to have sufficient financial flexibility to react to and resolve its negative financial situation. These credits are closely monitored for improvement or deterioration. The "substandard" rating is assigned to loans that are inadequately protected by the current net worth and paying capacity of the borrower and that may be further at risk due to deterioration in the value of collateral pledged. Well-defined weaknesses jeopardize liquidation of the debt. These loans are still considered collectible; however, a distinct possibility exists that Heartland will sustain some loss if deficiencies are not corrected. Substandard loans may exhibit some or all of the following weaknesses: deteriorating financial trends, lack of earnings, inadequate debt service capacity, excessive debt and/or lack of liquidity. The "doubtful" rating is assigned to loans where identified weaknesses in the borrowers' ability to repay the loan make collection or liquidation in full, on the basis of existing facts, conditions and values, highly questionable and improbable. These borrowers are usually in default, lack liquidity and capital, as well as resources necessary to remain as an operating entity. Specific pending events, such as capital injections, liquidations or perfection of liens on additional collateral, may strengthen the credit, thus deferring the rating of the loan as "loss" until the exact status of the loan can be determined. The loss rating is assigned to loans considered uncollectible. As of September 30, 2017, Heartland had one loan relationship with a gross balance of $9.6 million included in the balance of gross loans receivable held to maturity, of which $2.2 million is classified as a loss. Included in the ASC 310-10-35 portion of the allowance as of September 30, 2017, is a $2.2 million specific reserve associated with this loan relationship. Heartland had no loans classified as doubtful as of September 30, 2017. Loans are placed on "nonaccrual" when management does not expect to collect payments of principal and interest in full or when principal or interest has been in default for a period of 90 days or more, unless the loan is both well secured and in the process of collection.

The following table presents loans by credit quality indicator at September 30, 2017, and December 31, 2016, in thousands:



	Pass		Nonpass		Total
September 30, 2017
Commercial	$	1,523,080	$	90,823	$	1,613,903
Commercial real estate	2,992,663		171,290		3,163,953
Total commercial and commercial real estate	4,515,743		262,113		4,777,856
Agricultural and agricultural real estate	445,554		66,210		511,764
Residential real estate	597,987		37,624		635,611
Consumer	437,831		12,257		450,088
Total gross loans receivable held to maturity	$	5,997,115	$	378,204	$	6,375,319
December 31, 2016
Commercial	$	1,187,557	$	99,708	$	1,287,265
Commercial real estate	2,379,632		158,950		2,538,582
Total commercial and commercial real estate	3,567,189		258,658		3,825,847
Agricultural and agricultural real estate	424,311		65,007		489,318
Residential real estate	584,626		33,298		617,924
Consumer	409,474		11,139		420,613
Total gross loans receivable held to maturity	$	4,985,600	$	368,102	$	5,353,702

The nonpass category in the table above is comprised of approximately 48% special mention loans and 52% substandard loans as of September 30, 2017. The percent of nonpass loans on nonaccrual status as of September 30, 2017, was 17%. As of December 31, 2016, the nonpass category in the table above was comprised of approximately 47% special mention loans and 53% substandard loans. The percent of nonpass loans on nonaccrual status as of December 31, 2016, was 17%. Loans delinquent 30 to 89 days as a percent of total loans were 0.33% at September 30, 2017, compared to 0.37% at December 31, 2016. Changes in credit risk are monitored on a regular basis and changes in risk ratings are made when identified. All impaired loans are reviewed at least annually.

The following table sets forth information regarding Heartland's accruing and nonaccrual loans at September 30, 2017, and December 31, 2016, in thousands:



	Accruing Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Nonaccrual		Total Loans
September 30, 2017
Commercial	$	2,591	$	133	$	215	$	2,939	$	1,603,397	$	7,567	$	1,613,903
Commercial real estate	6,140		465		—		6,605		3,140,672		16,676		3,163,953
Total commercial and commercial real estate	8,731		598		215		9,544		4,744,069		24,243		4,777,856
Agricultural and agricultural real estate	315		782		1,282		2,379		496,593		12,792		511,764
Residential real estate	5,033		449		—		5,482		607,165		22,964		635,611
Consumer	3,001		1,813		851		5,665		440,966		3,457		450,088
Total gross loans receivable held to maturity	$	17,080	$	3,642	$	2,348	$	23,070	$	6,288,793	$	63,456	$	6,375,319
December 31, 2016
Commercial	$	1,127	$	219	$	77	$	1,423	$	1,281,241	$	4,601	$	1,287,265
Commercial real estate	886		3,929		—		4,815		2,513,069		20,698		2,538,582
Total commercial and commercial real estate	2,013		4,148		77		6,238		3,794,310		25,299		3,825,847
Agricultural and agricultural real estate	199		3,191		—		3,390		472,597		13,331		489,318
Residential real estate	4,986		846		—		5,832		590,626		21,466		617,924
Consumer	3,455		1,021		9		4,485		411,925		4,203		420,613
Total gross loans receivable held to maturity	$	10,653	$	9,206	$	86	$	19,945	$	5,269,458	$	64,299	$	5,353,702

The majority of Heartland's impaired loans are on nonaccrual or have had their terms restructured in a troubled debt restructuring. The following tables present, by category of loan, impaired loans, the unpaid contractual loan balances at September 30, 2017, and December 31, 2016; the outstanding loan balances recorded on the consolidated balance sheets at September 30, 2017, and December 31, 2016; any related allowance recorded for those loans as of September 30, 2017, and December 31, 2016; the average outstanding loan balances recorded on the consolidated balance sheets during the three- and nine-months ended September 30, 2017, and year ended December 31, 2016; and the interest income recognized on the impaired loans during the three- and nine-month periods ended September 30, 2017, and year ended December 31, 2016, in thousands:



	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Quarter- to- Date Avg. Loan Balance		Quarter- to- Date Interest Income Recognized		Year- to- Date Avg. Loan Balance		Year- to- Date Interest Income Recognized
September 30, 2017
Impaired loans with a related allowance:
Commercial	$	3,190	$	3,190	$	2,166	$	4,885	$	—	$	3,829	$	1
Commercial real estate	11,272		9,416		864		10,637		—		12,106		7
Total commercial and commercial real estate	14,462		12,606		3,030		15,522		—		15,935		8
Agricultural and agricultural real estate	10,289		10,289		2,353		3,532		—		2,140		—
Residential real estate	1,640		1,640		393		1,633		—		2,197		10
Consumer	2,179		2,179		1,267		2,155		10		2,343		32
Total impaired loans with a related allowance	$	28,570	$	26,714	$	7,043	$	22,842	$	10	$	22,615	$	50
Impaired loans without a related allowance:
Commercial	$	4,887	$	3,767	$	—	$	2,727	$	—	$	2,017	$	112
Commercial real estate	19,132		18,527		—		18,237		201		21,750		536
Total commercial and commercial real estate	24,019		22,294		—		20,964		201		23,767		648
Agricultural and agricultural real estate	2,503		2,503		—		8,343		—		10,858		—
Residential real estate	28,197		28,193		—		27,556		112		26,006		230
Consumer	4,345		4,345		—		4,222		19		3,849		61
Total impaired loans without a related allowance	$	59,064	$	57,335	$	—	$	61,085	$	332	$	64,480	$	939
Total impaired loans held to maturity:
Commercial	$	8,077	$	6,957	$	2,166	$	7,612	$	—	$	5,846	$	113
Commercial real estate	30,404		27,943		864		28,874		201		33,856		543
Total commercial and commercial real estate	38,481		34,900		3,030		36,486		201		39,702		656
Agricultural and agricultural real estate	12,792		12,792		2,353		11,875		—		12,998		—
Residential real estate	29,837		29,833		393		29,189		112		28,203		240
Consumer	6,524		6,524		1,267		6,377		29		6,192		93
Total impaired loans held to maturity	$	87,634	$	84,049	$	7,043	$	83,927	$	342	$	87,095	$	989



	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Year-to- Date Avg. Loan Balance		Year-to- Date Interest Income Recognized
December 31, 2016
Impaired loans with a related allowance:
Commercial	$	2,852	$	2,840	$	1,318	$	3,136	$	2
Commercial real estate	14,221		14,221		2,671		10,625		21
Total commercial and commercial real estate	17,073		17,061		3,989		13,761		23
Agricultural and agricultural real estate	2,771		2,771		816		912		21
Residential real estate	3,490		3,490		497		3,371		43
Consumer	2,644		2,644		1,451		3,082		42
Total impaired loans with a related allowance	$	25,978	$	25,966	$	6,753	$	21,126	$	129
Impaired loans without a related allowance:
Commercial	$	925	$	872	$	—	$	5,329	$	251
Commercial real estate	31,875		30,996		—		39,632		1,647
Total commercial and commercial real estate	32,800		31,868		—		44,961		1,898
Agricultural and agricultural real estate	13,959		13,959		—		12,722		157
Residential real estate	22,408		22,236		—		18,446		202
Consumer	3,344		3,344		—		2,659		68
Total impaired loans without a related allowance	$	72,511	$	71,407	$	—	$	78,788	$	2,325
Total impaired loans held to maturity:
Commercial	$	3,777	$	3,712	$	1,318	$	8,465	$	253
Commercial real estate	46,096		45,217		2,671		50,257		1,668
Total commercial and commercial real estate	49,873		48,929		3,989		58,722		1,921
Agricultural and agricultural real estate	16,730		16,730		816		13,634		178
Residential real estate	25,898		25,726		497		21,817		245
Consumer	5,988		5,988		1,451		5,741		110
Total impaired loans held to maturity	$	98,489	$	97,373	$	6,753	$	99,914	$	2,454

On July 7, 2017, Heartland acquired Citywide Banks of Colorado, Inc., parent company of Citywide Banks, based in Denver, Colorado. As of July 7, 2017, Citywide Banks had gross loans of $1.00 billion, and the estimated fair value of the loans acquired was $985.4 million.

On February 28, 2017, Heartland acquired Founders Bancorp, parent company of Founders Community Bank, based in San Luis Obispo, California. As of February 28, 2017, Founders Community Bank had gross loans of $98.9 million, and the estimated fair value of the loans acquired was $96.4 million.

On February 5, 2016, Heartland acquired CIC Bancshares, Inc., parent company of Centennial Bank, in Denver, Colorado. As of February 5, 2016, Centennial Bank had gross loans of $594.9 million, and the estimated fair value of the loans acquired was $581.5 million.

Heartland uses the acquisition method of accounting for purchased loans in accordance with ASC 805, "Business Combinations." Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date, but the purchaser cannot carry over the related allowance for loan losses. Purchased loans are accounted for under ASC 310-30, "Loans and Debt Securities with Deteriorated Credit Quality," when the loans have evidence of credit deterioration since origination, and when at the date of the acquisition, it is probable that Heartland will not collect all contractually required principal and interest payments. Evidence of credit quality deterioration at the purchase date includes statistics such as past due and nonaccrual status. Generally, acquired loans that meet Heartland’s definition for nonaccrual status fall within the scope of ASC 310-30. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference, which is included in the carrying value of the loans. Subsequent decreases to the expected cash flows of the loan will generally result in a provision for loan losses. Subsequent increases in cash flows result in a reversal of the provision for loan losses to the extent of prior charges, or a reclassification of the difference from nonaccretable to accretable with a positive impact on future interest income. Further, any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loan when there is a reasonable expectation about the amount and timing of such cash flows.

At September 30, 2017, and December 31, 2016, the carrying amount of loans acquired since 2015 consist of purchased impaired and nonimpaired loans as summarized in the following table, in thousands:



	September 30, 2017						December 31, 2016
	Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans		Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans
Commercial	$	968	$	270,241	$	271,209	$	2,198	$	99,082	$	101,280
Commercial real estate	2,509		1,181,333		1,183,842		2,079		622,117		624,196
Agricultural and agricultural real estate	—		1,251		1,251		—		181		181
Residential real estate	211		184,167		184,378		186		157,468		157,654
Consumer loans	—		62,491		62,491		—		47,368		47,368
Total loans	$	3,688	$	1,699,483	$	1,703,171	$	4,463	$	926,216	$	930,679

Changes in accretable yield on acquired loans with evidence of credit deterioration at the date of acquisition for the three- and nine-month periods ended September 30, 2017, and September 30, 2016, were as follows, in thousands:



	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Balance at beginning of period	$	101		$	168		$	182		$	557
Original yield discount, net, at date of acquisitions	—			—			—			19
Accretion	(700		)	(379		)	(1,074		)	(845		)
Reclassification from nonaccretable difference⁽¹⁾	654			331			947			389
Balance at period end	$	55		$	120		$	55		$	120

(1) Represents increases in estimated cash flows expected to be received, primarily due to lower estimated credit losses.

For loans acquired since January 2015, on the acquisition dates the preliminary estimate of the contractually required payments receivable for all loans with evidence of credit deterioration since origination was $22.2 million, and the estimated fair value of these loans was $13.1 million. At September 30, 2017, a majority of these loans were valued based upon the liquidation value of the underlying collateral, because the expected cash flows are primarily based on the liquidation of such collateral, and the timing and amount of the cash flows could not be reasonably estimated. At September 30, 2017, and December 31, 2016, there was an allowance for loan losses of $132,000 and $588,000, respectively, related to these ASC 310-30 loans. Provision expense of $4,000 and $126,000 was recorded for the three-month periods ended September 30, 2017, and 2016, respectively. Provision expense of $5,000 and $517,000 was recorded for the nine-month periods ended September 30, 2017, and 2016, respectively.

For loans acquired since January 2015, the preliminary estimate on the acquisition dates of the contractually required payments receivable for all nonimpaired loans acquired was $2.66 billion, and the estimated fair value of the loans was $2.59 billion.