Summary of Selected Significant Accounting Policies (Details 3) € in Thousands, CZK in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2002	Sep. 30, 2015 USD ($) shares	Sep. 30, 2014 USD ($) shares	Sep. 30, 2015 USD ($) shares	Sep. 30, 2014 USD ($) shares	Jun. 01, 2015 CZK	Jan. 01, 2003 CZK	Jan. 01, 2003 USD ($)	Jan. 01, 2003 EUR (€)	Jun. 30, 1998 CZK
Impact of foreign currency translation on goodwill
Residual balance		$ 5,129		$ 5,129			CZK 124,447	$ 3,708	€ 117
Net cumulative change to goodwill due to foreign currency translation				1,421
Period over which goodwill was amortized	15 years
Stock-based Compensation
Stock-based compensation		$ 15	$ 0	$ 44	$ 0
Share repurchase
Issuable shares under the Company's Deferred Compensation Plan | shares		436,712	301,391	436,712	301,391
Pilsen reporting unit
Impact of foreign currency translation on goodwill
Applicable Foreign Exchange Rate ("FX")		24.266		24.266						33.883
Residual balance		$ 4,248		$ 4,248				3,042		CZK 103,072
Net cumulative change to goodwill due to foreign currency translation				$ 1,206
South-Moravia reporting unit
Impact of foreign currency translation on goodwill
Applicable Foreign Exchange Rate ("FX")		24.266		24.266						33.883
Residual balance		$ 750		$ 750				537		CZK 18,195
Net cumulative change to goodwill due to foreign currency translation				$ 213
Lower Saxony reporting unit
Impact of foreign currency translation on goodwill
Applicable Foreign Exchange Rate ("FX")		24.266		24.266		27.245
Residual balance		$ 131		$ 131		CZK 3,180		$ 129	€ 117
Net cumulative change to goodwill due to foreign currency translation				$ 2