Summary of Significant Accounting Policies (Details 5)	Dec. 31, 2017	Dec. 31, 2016
Swedish Krona [Member]
Exchange Rate for Consolidated Balance Sheets
Exchange rate for the consolidated balance sheets	8.21	9.07
Japanese Yen [Member]
Exchange Rate for Consolidated Balance Sheets
Exchange rate for the consolidated balance sheets	112.65	116.97
South Korean Won [Member]
Exchange Rate for Consolidated Balance Sheets
Exchange rate for the consolidated balance sheets	1,066.31	1,205.11
Taiwan Dollar [Member]
Exchange Rate for Consolidated Balance Sheets
Exchange rate for the consolidated balance sheets	29.66	32.28