Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

The following tables provide the assets and liabilities carried at fair value measured on a recurring basis for the periods indicated (in thousands):

	Fair value measurements at March 31, 2016 using
	Total carrying value		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)
Available for sale securities	$	36,351	$	7,015	$	29,336	$	—
	$	36,351	$	7,015	$	29,336	$	—

	Fair value measurements at December 31, 2015 using
	Total carrying value		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)
Available for sale securities	$	41,233	$	8,785	$	32,448	$	—
	$	41,233	$	8,785	$	32,448	$	—

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

The following tables provide the assets and liabilities carried at fair value on a non-recurring basis for the periods indicated (in thousands):

	Fair value measurements at March 31, 2016 using
	Total carrying value		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)
Assets held for sale	$	4,304	$	—	$	—	$	4,304
	$	4,304	$	—	$	—	$	4,304

	Fair value measurements at December 31, 2015 using
	Total carrying value		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)
Assets held for sale	$	4,134	$	—	$	—	$	4,134
	$	4,134	$	—	$	—	$	4,134