Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2016
Income Tax Disclosure [Abstract]  
Schedule of Income before Income Tax, Domestic and Foreign The components of income before income taxes consist of the following (in thousands):
 
Year Ended December 31,
 
2016
 
2015
 
2014
Domestic
$
(3,106
)
 
$
(7,820
)
 
$
4,502

Foreign
67,183

 
55,613

 
16,134

Income before income taxes
$
64,077

 
$
47,793

 
$
20,636
Schedule of Components of Income Tax Expense (Benefit) The components of the income tax provision consist of the following (in thousands):
 
Year Ended December 31,
 
2016
 
2015
 
2014
Current:
 
 
 
 
 
Federal
$
7,151

 
$
12

 
$
104

State
(81
)
 
100

 
11

Foreign
1,648

 
456

 
194

Total current taxes
8,718

 
568

 
309

Deferred taxes
273

 
(16
)
 
(43
)
Income tax provision
$
8,991

 
$
552

 
$
266
Schedule of Effective Income Tax Rate Reconciliation A reconciliation of the reported income tax provision to the provision that would result from applying the domestic federal statutory tax rate to pretax income is as follows (in thousands):
 
Year Ended December 31,
 
2016
 
2015
 
2014
Income tax at federal statutory rate
$
22,427

 
$
16,250

 
$
7,016

Effect of permanent differences
12,496

 
370

 
9

Change in valuation allowance
(3,877
)
 
2,017

 
(2,070
)
Foreign rate differential
(21,713
)
 
(18,099
)
 
(5,240
)
Other reconciling items
(342
)
 
14

 
551

Income tax provision
$
8,991

 
$
552

 
$
266
Income Tax Foreign Rate Differential [Table Text Block]
 
 
 
Year Ended December 31,
 
Statutory Tax Rate
 
2016
 
2015
 
2014
Cayman Islands
—
%
 
$
58,169

 
$
50,993

 
$
16,267

Hong Kong
16.5
%
 
3,992

 
2,645

 
1,129

China
25.0
%
 
3,855

 
1,493

 
153
Schedule of Deferred Tax Assets and Liabilities Deferred income taxes consist of the following (in thousands):
 
December 31,
 
2016
 
2015
Deferred tax assets:
 
 
 
Net operating losses
$
235

 
$
3,197

Stock-based compensation
623

 
—

Accrued expenses
3,174

 
3,367

Tax credits
—

 
418

Other
—

 
32

Total deferred tax assets
4,032

 
7,014

Valuation allowance
(235
)
 
(4,112
)
Net deferred tax assets
3,797

 
2,902

Deferred tax liabilities:
 
 
 
Foreign earnings
(3,650
)
 
(2,789
)
Other
(415
)
 
(173
)
Total deferred tax liabilities
(4,065
)
 
(2,962
)
Net deferred tax liability
$
(268
)
 
$
(60
)