Summary of Significant Accounting Policies - Fair Value of Financial Instruments Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 28,962	$ 28,338	$ 18,390
Restricted cash	1,011	373	502
Restricted cash for Development Projects		21,039	$ 64,178
Long-term Debt	527,134	543,697
Long-term loan, related party, net of debt issuance costs	34,011	30,954
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, at Carrying Value		28,338
Cash and Cash Equivalents, Fair Value Disclosure	28,962	28,338
Restricted cash	1,011	373
Restricted Cash, Current, Fair Value Disclosure	1,011	373
Restricted Cash Equivalents, Noncurrent	0	21,039
Restricted Cash Equivalents, Noncurrent, Fair Value Disclosure	0	21,039
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Fair Value Disclosure	34,011	30,954
Derivative Liability, Notional Amount	1,088	879
Long-term loan, related party, net of debt issuance costs	34,011
Notes Payable, Related Parties		30,954
Derivative Liability	1,088	879
Term Loan Facility, Term B Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash for Development Projects	0	21,000
Bangkok Bank Loan [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of Credit, Fair Value Disclosure	20,000	20,000
Long-term Line of Credit	20,000	20,000
Fifth Third Revolver [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lines of Credit, Fair Value Disclosure	15	15,000
Guaranty Liabilities	2,045	2,300
Long-term Line of Credit	15,000	15,000
Equipment Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	10,000	20,400
Equipment Loans [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	9,967	20,384
Lines of Credit, Fair Value Disclosure	9,967	20,384
Interest Rate Cap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	3	143
Forward Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	529	1,865
Notes Payable to Banks [Member] | Term Loan Facility, Term B Loan [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	438,256	440,803
Notes Payable, Fair Value Disclosure	438,253	440,660
Notes Payable to Banks [Member] | Term Loan Facility, Term A Loan [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	57,738	64,750
Notes Payable, Fair Value Disclosure	57,738	64,750
Series F | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Instruments, Owned, at Fair Value	$ 14,879	$ 31,122