Income Taxes - Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Taxes at federal statutory rate	$ 2,888	$ 3,054	$ 143
State taxes, net of federal benefit	(29)	(23)	(323)
Effect of tax rate differential for foreign subsidiary	(2,531)	(2,695)	(1,576)
Valuation allowance, including tax benefits of stock activity	(239)	(8,034)	2,201
Nondeductible interest	0	0	462
Stock-based compensation	460	242	73
Income Tax Reconciliation, Prior year true-up Subpart F Income Inclusion	0	2,484	0
Return to provision adjustments	(920)	3,568	576
Subpart F income inclusion	2,446	3,110	0
Other	77	643	300
Tax provision	$ 2,152	$ 2,349	$ 1,856