Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Accumulated other Comprehensive Income [Roll Forward]
Balance as of December 31, 2012	$ 521
Other comprehensive loss before reclassifications	(993)
Amounts reclassified from accumulated other comprehensive income	(624)
Net other comprehensive loss	(1,617)
Balance as of December 31, 2013	(1,096)
Gains and Losses on Cash Flow Hedges
Accumulated other Comprehensive Income [Roll Forward]
Balance as of December 31, 2012	521
Other comprehensive loss before reclassifications	(585)
Amounts reclassified from accumulated other comprehensive income	(624)
Net other comprehensive loss	(1,209)
Balance as of December 31, 2013	(688)
Change in Valuation Allowance
Accumulated other Comprehensive Income [Roll Forward]
Balance as of December 31, 2012	0
Other comprehensive loss before reclassifications	(408)
Amounts reclassified from accumulated other comprehensive income	0
Net other comprehensive loss	(408)
Balance as of December 31, 2013	$ (408)