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Ratio applied to covenants under the line of credit to incur additional indebtedness.

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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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Amount of contractual obligation due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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

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The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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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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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

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Commitments and Contingencies (Details) $ in Thousands		3 Months Ended
Commitments and Contingencies (Details) $ in Thousands	Jan. 21, 2014 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Jan. 22, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2013 USD ($)
Line of Credit
Aggregate borrowing base				$ 19,000	$ 25,000	$ 37,000
Amount borrowed	$ 5,000
Amount outstanding		$ 0			$ 0
Aggregate expected sublease payments		$ 200
Applicable margin (as a percent)		1.00%
Adjusted quick ratio		8.59			7.90
Future minimum lease payments, net of aggregate expected sublease payments
2016		$ 3,239
2017		5,491
2018		5,913
2019		5,679
2020		4,955
Thereafter		48,073
Total future minimum lease payments		73,350
Deferred rent liability		500			$ 600
Rent expense net of sublease income		1,000	$ 600
Sublease income		100	$ 100
Future minimum program payments for intellectual property and other rights
2016		3,191
2017		4,478
2018		3,875
2019		875
2020		625
Thereafter		5,650
Total future minimum payments to clients		$ 18,694
Base rate
Line of Credit
Variable interest rate basis		Base rate
Applicable margin (as a percent)		1.50%
Federal fund rate
Line of Credit
Variable interest rate basis		federal funds rate
30 days LIBOR
Line of Credit
Variable interest rate basis		30 day LIBOR
Applicable margin (as a percent)		1.00%
LIBOR
Line of Credit
Variable interest rate basis		LIBOR
Applicable margin (as a percent)		2.50%
Minimum
Line of Credit
Covenants ratio		1.10
Office facility
Line of Credit
Security deposit				$ 6,000