Fair Value Disclosures (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Assets and liabilities recorded at fair value on a recurring basis are as follows.

	Balance as of June 30, 2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)
Debt securities available for sale:
U.S. Government agencies	$	3,917,460	$	-	$	3,917,460	$	-
State and municipal securities		17,415,163		-		17,415,163		-
Mortgage-backed securities:
Residential mortgage loans guaranteed by GNMA or FNMA		8,174,509		-		8,174,509		-
Collateralized mortgage obligations issued or guaranteed by U.S. Government agencies or sponsored agencies		70,270,317		-		70,270,317		-
Total securities available for sale	$	99,777,449	$	-	$	99,777,449	$	-
Cash surrender value of life insurance	$	1,216,200	$	-	$	1,216,200	$	-

	Balance as of December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)
Debt securities available for sale:
U.S. Government agencies	$	4,018,151	$	-	$	4,018,151	$	-
State and municipal securities		23,633,317		-		23,633,317		-
Mortgage-backed securities:
Residential mortgage loans guaranteed by GNMA or FNMA		9,222,419		-		9,222,419		-
Collateralized mortgage obligations issued or guaranteed by U.S. Government agencies or sponsored agencies		39,222,759		-		39,222,759		-
Total securities available for sale	$	76,096,646	$	-	$	76,096,646	$	-
Cash surrender value of life insurance	$	1,199,725	$	-	$	1,199,725	$	-

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]

The tables below present information about assets and liabilities on the balance sheet at June 30, 2013 and December 31, 2012 for which a nonrecurring change in fair value was recorded (amounts in thousands).

	Balance as of June 30, 2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)
Impaired loans	$	3,691	$	-	$	3,691	$	-
Foreclosed assets (OREO & Repossessions)		18,867		-		18,867		-

	Balance as of December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)
Impaired loans	$	4,869	$	-	$	4,869	$	-
Foreclosed assets (OREO & Repossessions)		20,332		-		20,332		-

Fair Value, by Balance Sheet Grouping [Table Text Block]

The carrying amount and estimated fair value of Cornerstone's financial instruments at June 30, 2013 and December 31, 2012 are as follows (in thousands):

	June 30, 2013				December 31, 2012
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Assets:
Cash and cash equivalents	$	28,701	$	28,701	$	59,395	$	59,395
Securities		99,817		99,816		76,142		76,143
Federal Home Loan Bank stock		2,323		2,323		2,323		2,323
Loans, net		270,968		270,959		270,850		271,128
Cash surrender value of life insurance		1,216		1,216		1,200		1,200
Accrued interest receivable		1,153		1,153		1,214		1,214
Liabilities:
Noninterest-bearing demand deposits		60,094		60,094		60,054		60,054
Interest-bearing demand deposits		24,614		24,614		30,179		30,179
Savings deposits and money market accounts		90,453		90,453		80,994		80,994
Time deposits		164,038		164,365		173,654		175,177
Federal funds purchased and securities sold under agreements to repurchase		22,907		22,907		19,587		19,587
Federal Home Loan Bank advances and other borrowings		31,740		31,740		37,175		37,175
Accrued interest payable		93		93		121		121
Unrecognized financial instruments (net of contract amount):
Commitments to extend credit		-		-		-		-
Letters of credit		-		-		-		-
Lines of credit		-		-		-		-