Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

	Year Ended December 31,
	2017			2016			2015
Domestic	$	(2,965	)	$	(3,106	)	$	(7,820	)
Foreign	46,391			67,183			55,613
Income before income taxes	$	43,426		$	64,077		$	47,793

Schedule of Components of Income Tax Expense (Benefit)

	Year Ended December 31,
	2017			2016			2015
Current:
Federal	$	20,277		$	7,151		$	12
State	2			(81		)	100
Foreign	1,216			1,648			456
Total current taxes	21,495			8,718			568
Deferred taxes	(1,647		)	273			(16		)
Income tax provision	$	19,848		$	8,991		$	552

Schedule of Effective Income Tax Rate Reconciliation

	Year Ended December 31,
	2017			2016			2015
Income tax at federal statutory rate	$	15,200		$	22,427		$	16,250
Effect of permanent differences	459			12,496			370
Tax Cut & Jobs Act repatriation tax	20,792			—			—
Tax Cut & Jobs Act federal rate change	954			—			—
Change in valuation allowance	(43		)	(3,877		)	2,017
Foreign rate differential	(15,002		)	(21,713		)	(18,099		)
Foreign tax credits	(2,105		)	(261		)	—
Other reconciling items	(407		)	(81		)	14
Income tax provision	$	19,848		$	8,991		$	552

Income Tax Foreign Rate Differential [Table Text Block]

			Year Ended December 31,
	Statutory Tax Rate		2017		2016		2015
Cayman Islands	—	%	$	39,954	$	58,169	$	50,993
Hong Kong	16.5	%	3,315		3,992		2,645
China	25.0	%	2,584		3,855		1,493

Schedule of Deferred Tax Assets and Liabilities

	December 31,
	2017			2016
Deferred tax assets:
Net operating losses	$	192		$	235
Stock-based compensation	270			623
Accrued expenses	1,374			3,174
Tax credits	—			—
Other	6			—
Total deferred tax assets	1,842			4,032
Valuation allowance	(192		)	(235		)
Net deferred tax assets	1,650			3,797
Deferred tax liabilities:
Foreign earnings	(4		)	(3,650		)
Other	(267		)	(415		)
Total deferred tax liabilities	(271		)	(4,065		)
Net deferred tax asset (liability)	$	1,379		$	(268	)