Summary of Significant Accounting Policies - Fair Value of Financial Instruments Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 13,958	$ 28,338	$ 29,632
Restricted cash	143	373	1,212
Restricted cash for Development Projects		21,039	$ 33,799
Long-term Debt	538,221	543,697
Long-term loan, related party, net of debt issuance costs	31,939	30,954
Fair Value, Measurements, 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	13,958	28,338
Restricted cash	143	373
Restricted Cash, Current, Fair Value Disclosure	143	373
Restricted Cash Equivalents, Noncurrent	15,889	21,039
Restricted Cash Equivalents, Noncurrent, Fair Value Disclosure	15,889	21,039
Fair Value, Measurements, 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	31,939	30,954
Derivative Liability, Notional Amount	994	879
Long-term loan, related party, net of debt issuance costs	31,939
Notes Payable, Related Parties		30,954
Derivative Liability	994	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	15,900	21,000
Bangkok Bank Loan [Member] | Fair Value, Measurements, 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, Measurements, 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	2,306	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	16,500	20,400
Equipment Loans [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	16,493	20,384
Lines of Credit, Fair Value Disclosure	16,493	20,384
Interest Rate Cap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	19	143
Forward Contracts [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	104	1,865
Notes Payable to Banks [Member] | Term Loan Facility, Term B Loan [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	439,889	440,803
Notes Payable, Fair Value Disclosure	439,870	440,660
Notes Payable to Banks [Member] | Term Loan Facility, Term A Loan [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt	62,988	64,750
Notes Payable, Fair Value Disclosure	62,988	64,750
Series F Preferred Stock | Fair Value, Measurements, 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	$ 25,662	$ 31,122