Financing costs not deferred, but rather directly recorded in interest expense.

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- Definition

Amount of increase (decrease) in cash. Cash is the 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. Includes effect from exchange rate changes.

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- Definition

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

+ References

No definition available.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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The average effective interest rate during the reporting period.

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

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Net amount of long-term deferred finance costs capitalized at the end of the reporting period.

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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.

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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.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt - 2015 Credit Agreement (Details Textual) - USD ($)		12 Months Ended
	Feb. 03, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Carrying value of debt		$ 284,577,000	$ 255,831,000
Proceeds from long-term debt		150,000,000
Cash used for repayment of debt		$ 127,500,000	15,000,000	$ 15,000,000
Debt instrument, interest rate terms		The 2015 Credit Agreement includes mandatory repayments of the aggregate principal amount of the 2015 Term Loan (payable quarterly) for the first (5% of total), second (5% of total), third (10% of total), fourth (15% of total), and fifth years (15% of total), with the remaining principal balance due at maturity (50% of total). The 2015 Credit Agreement has no prepayment penalties and requires mandatory repayments under certain circumstances, including: (i) asset sales or casualty proceeds; and (ii) proceeds of debt or preferred stock issuances.
Deferred financing costs related to convertible notes	$ 5,900,000
Financing costs directly recorded to interest expense		$ 900,000
2015 Credit Agreement
Debt Instrument [Line Items]
Credit Agreement	350,000,000
Cash used for repayment of debt		$ 120,000,000
Increase (decrease) in available cash	$ 30,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Credit agreement interest rate		2.36%
Term loan combined interest rate	1.75%
Debt instrument, frequency of periodic payment		payable quarterly
Financing cost		$ 2,700,000
Deferred financing costs related to convertible notes		4,700,000
2015 Credit Agreement \| Minimum
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
2015 Credit Agreement \| Maximum
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
2015 Credit Agreement \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument [Line Items]
Basis spread on term loan	1.75%
2015 Credit Agreement \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument [Line Items]
Basis spread on term loan	2.75%
2015 Credit Agreement \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on term loan	0.75%
2015 Credit Agreement \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on term loan	1.75%
2015 Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Carrying value of debt		142,500,000
Proceeds from long-term debt		$ 150,000,000
Basis spread on term loan		1.75%
Term loan combined interest rate		2.36%
2015 Credit Agreement \| Revolving Loan
Debt Instrument [Line Items]
Credit Agreement	$ 200,000,000	$ 200,000,000
Credit facility, current borrowing capacity		$ 200,000,000
2012 Credit Agreement
Debt Instrument [Line Items]
Credit Agreement					$ 250,000,000
2012 Credit Agreement \| Minimum
Debt Instrument [Line Items]
Basis spread on term loan					2.00%
2012 Credit Agreement \| Maximum
Debt Instrument [Line Items]
Basis spread on term loan					2.75%
2012 Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Carrying value of debt			$ 120,000,000
Basis spread on term loan			2.00%
Term loan combined interest rate			2.25%
2012 Credit Agreement \| Revolving Loan
Debt Instrument [Line Items]
Credit Agreement	$ 100,000,000		$ 100,000,000