Summary of Significant Accounting Policies (Details 3)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Swedish Krona [Member]
Weighted average exchange rate for consolidated statements of operations
Weighted-average exchange rate for consolidated statements of operations	8.55	8.43	6.86
Japanese Yen [Member]
Weighted average exchange rate for consolidated statements of operations
Weighted-average exchange rate for consolidated statements of operations	108.75	121.03	105.84
South Korean Won [Member]
Weighted average exchange rate for consolidated statements of operations
Weighted-average exchange rate for consolidated statements of operations	1,157.14	1,130.22	1,050.63
Taiwan Dollar [Member]
Weighted average exchange rate for consolidated statements of operations
Weighted-average exchange rate for consolidated statements of operations	32.22	31.73