Income Taxes - Effective Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of income before income taxes
Domestic income	$ 21,695	$ 9,797
Foreign loss	(13,080)	(10,323)
Income (loss) before income tax expense	8,615	(526)
Income tax expense
Current income tax expense	8,493	9,231
Deferred income tax	3,593	1,040
Income tax expense	12,086	10,271
Foreign withholding tax included in current tax expense	$ 1,400	$ 1,500
Effective tax rates reconciliation
Statutory federal income tax rate (as a percent)		21.00%	35.00%
Equity investment and Colombia and return to provision adjustments (as a percent)	30.00%
Income tax expense reconciliation
Income tax (benefit) expense at federal statutory rate - US Only	$ 1,810	$ (108)
Income tax expense at federal statutory rate - Foreign Only	3,637	3,832
Permanent Items	184	836
Return to provision true ups - Current/Deferred	301	(51)
Foreign rate differential	(2,284)	(141)
Foreign tax credits	(5,501)	(7,890)
Foreign valuation allowance	10,007	9,429
Change in FTC valuation allowance	3,785	4,141
Foreign withholding taxes	1,449	1,499
Deferred foreign tax credit offset	(421)	(873)
State taxes and state rate change	480	374
UTP adjustment		(55)
Income tax expense	12,086	10,271
Foreign tax authority | Puerto Rico
Income tax expense reconciliation
Revaluation of Puerto Rico deferred taxes	$ (1,361)
Puerto Rico tax rate change		$ (722)