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Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Measurement [Abstract]

Schedule of assets and liabilities measured at fair value on a recurring basis

							Fair Value Measurements at Reporting Date Using
		December 31, 2015					Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)					Significant Other Observable Inputs (Level 2)					Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds		$	100				$	100				$	—				$	—
Total assets at fair value on a recurring basis		$	100				$	100				$	—				$	—
Liabilities:
Other long-term liabilities:
Deferred payments		$	3,278				$	—				$	—				$	3,278
Total liabilities at fair value on a recurring basis		$	3,278				$	—				$	—				$	3,278

								Fair Value Measurements at Reporting Date Using
			December 31, 2014					Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)					Significant Other Observable Inputs (Level 2)					Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds			$	8,275				$	8,275				$	—				$	—
Interest rate swaps				143					—					143					—
Total assets at fair value on a recurring basis			$	8,418				$	8,275				$	143				$	—
Liabilities:
Other long-term liabilities:
Deferred payments			$	2,398				$	—				$	—				$	2,398
Total liabilities at fair value on a recurring basis			$	2,398				$	—				$	—				$	2,398

Schedule of changes in fair value of level 3 liability

		2014				2015
Balance at beginning of year		$	2,115			$	2,398
Amounts earned			(545	)			(756	)
Adjustments to fair value			828				1,636
Balance at end of year		$	2,398			$	3,278

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- References

No definition available.

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- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19279-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258

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