Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on a Recurring Basis

This table presents the carrying value and fair value, by fair value hierarchy, of our financial instruments, excluding cash and cash equivalents, accounts receivable and accounts payable at December 31, 2013 (in thousands).

			Fair Value Measurements Using
Description	December 31, 2013		Quoted Prices for Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total (Losses)
Credit facility borrowings	$	2,000	$	—	$	2,000	$	—	$	—

Assets Measured at Fair Value on a Recurring Basis

			Fair Value Measurements Using
Description	December 31, 2013		Quoted Prices for Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total (Losses)
	(in thousands)
Cash and cash equivalents	$	40,406	$	40,406	$	—	$	—	$	—

			Fair Value Measurements Using
Description	March 31, 2014		Quoted Prices for Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total (Losses)
	(in thousands)
Cash and cash equivalents	$	40,322	$	40,322	$	—	$	—	$	—