Debt and Credit Facility Line Items

No definition available.

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- Definition

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant Compliance, Maximum Percentage Available on Line of Credit Due To Exceeded Maximum Leverage Ratio

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Discount Percentage

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Debt Instrument, Excess Cash Flow Repayment Percentage

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Percentage of the principal amount of the loan, or required periodic payments, applied to principal.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Percentage of the face value repurchased.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Debt Instrument, Term After Which Excess Cash Flow is Paid

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Threshold From Sale of Assets Used Towards Mandatory Prepayments

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Variable Rate Floor

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Percent of amendment fee paid to consenting lenders

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Write-off of Debt Discount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchaseAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt discount.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Balance Type:	debit
Period Type:	instant

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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- Definition

Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Balance Type:	debit
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- Definition

Current period income tax expense or benefit pertaining to a gain (loss) on an extinguishment of debt.

+ References

+ Details

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Period Type:	duration

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Name Accounting Standards Codification
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Balance Type:	debit
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Paragraph 14
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- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

+ Details

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Long-Term Debt - 2013 Senior Credit Facility (Details)		1 Months Ended			3 Months Ended	12 Months Ended
Long-Term Debt - 2013 Senior Credit Facility (Details)	Nov. 15, 2013 USD ($)	Oct. 31, 2017 USD ($)	May 31, 2017 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	May 06, 2016 USD ($)	Apr. 21, 2016 USD ($)
Debt And Credit Facility [Line Items]
Cash						$ 17,556,000
Repurchase amount					$ 71,152,000
Gain (loss) on extinguishment of debt					$ 38,497,000	0	$ 37,893,000	$ 17,911,000
Write-off of unamortized debt issuance cost				$ 3,005,000
Gain on extinguishment of debt, tax effect						13,451,000
(Benefit) provision for corporate income taxes						$ (9,686,000)	9,771,000	(14,351,000)
Debt face amount			$ 5,000,000
Stated interest rate			9.55%
Periodic payment on principal, percentage			1.00%
Periodic payment on principal			$ 50,000
Dividends		$ 35,000,000
Line of Credit \| 2013 Senior Credit Facility
Debt And Credit Facility [Line Items]
Line of credit maximum borrowing capacity	$ 370,000,000
Covenant compliance, maximum percentage available on line of credit due to exceeded maximum leverage ratio	25.00%
Threshold from sale of assets used towards mandatory prepayments	$ 30,000,000
Line of Credit \| 2013 Senior Credit Facility \| Leverage Ratio, Greater Than 2.50
Debt And Credit Facility [Line Items]
Covenant compliance, maximum leverage ratio						2.50
Excess cash flow repayment percentage						50.00%
Line of Credit \| 2013 Senior Credit Facility \| Leverage Ratio, Greater than 2.00 but Less than 2.50
Debt And Credit Facility [Line Items]
Covenant compliance, maximum leverage ratio						2.00
Excess cash flow repayment percentage						25.00%
Line of Credit \| 2013 Senior Credit Facility \| Leverage Ratio, Less Than or Equal to 2.00
Debt And Credit Facility [Line Items]
Excess cash flow repayment percentage						0.00%
Line of Credit \| 2013 Senior Credit Facility \| Base Rate
Debt And Credit Facility [Line Items]
Debt basis spread on variable rate (as percent)	2.50%
Line of Credit \| 2013 Senior Credit Facility \| LIBOR
Debt And Credit Facility [Line Items]
Debt basis spread on variable rate (as percent)	3.50%
Secured Debt \| 2013 Senior Credit Facility
Debt And Credit Facility [Line Items]
Debt unamortized discount	$ 4,356,000
Deferred debt issuance costs	5,119,000
Secured Debt \| 2013 Term Loan Facility Maturing November 15, 2020
Debt And Credit Facility [Line Items]
2013 Term Loan Facility	325,000,000					$ 199,918,000	202,000,000
Proceeds from issuance of secured debt	$ 323,375,000
Debt instrument, discount percentage	0.50%
Debt unamortized discount	$ 1,625,000					$ 2,912,000	$ 3,851,000
Percent of amendment fee paid to consenting lenders						0.25%
Repayment of term loan						$ 24,101,000
Debt instrument, term after which excess cash flow is paid						95 days
Long-term debt						$ 196,029,000
Unamortized debt issuance costs						977,000
Secured Debt \| 2013 Term Loan Facility Maturing November 15, 2020 \| Base Rate
Debt And Credit Facility [Line Items]
Debt instrument, variable rate floor (as a percentage)	2.00%
Secured Debt \| 2013 Term Loan Facility Maturing November 15, 2020 \| LIBOR
Debt And Credit Facility [Line Items]
Debt instrument, variable rate floor (as a percentage)	1.00%
Revolving Credit Facility \| 2013 Senior Credit Facility
Debt And Credit Facility [Line Items]
Repurchased face amount				29,829,000				29,829,000	$ 62,447,000	$ 8,705,000
Repurchase amount				$ 10,947,000				$ 10,947,000	$ 25,978,000	$ 3,787,000
Repurchase amount, percentage of face value				36.70%				36.70%	41.60%	43.50%
Write-off of unamortized debt issuance cost				$ 249,000		545,000
Write-off of debt discount				$ 707,000		$ 1,561,000
Revolving Credit Facility \| 2013 Revolving Loan Facility Maturing November 15, 2018
Debt And Credit Facility [Line Items]
Line of credit maximum borrowing capacity	$ 45,000,000
Covenant compliance, maximum percentage available on line of credit due to exceeded maximum leverage ratio						25.00%
Covenant compliance, maximum leverage ratio						4.50
Unused borrowing capacity based on leverage ratio						$ 11,250,000
Unused borrowing capacity						37,993,000
Letter of Credit \| 2013 Senior Credit Facility
Debt And Credit Facility [Line Items]
Line of credit maximum borrowing capacity	$ 5,500,000
Letter of Credit \| 2013 Revolving Loan Facility Maturing November 15, 2018
Debt And Credit Facility [Line Items]
Letters of credit outstanding						$ 7,007,000