Available-for-sale Securities (Tables)

6 Months Ended

Jun. 30, 2015

Jun. 30, 2014

Available-for-sale Securities [Abstract]

Investments Classified by Contractual Maturity Date [Table Text Block]

The contractual maturities of available-for sale securities were as follows:

	June 30, 2015
(in thousands)	Less than 12 months		1-3 Years	Over 3 Years	Total
Certificates of deposit	$	1,751	—	—	1,751
Corporate bonds	457		4,171	1,521	6,149
Total	$	2,208	4,171	1,521	7,900

Available-for-sale Securities [Table Text Block]

4.    Available-for-Sale Securities

Available-for-sale securities are included in other assets in the accompanying Consolidated Balance Sheets, and consists of the following:

	June 30, 2015
(in thousands)	Amortized Cost		Gains in Accumulated Other Comprehensive Loss	Losses in Accumulated Other Comprehensive Loss		Estimated Fair Value
Certificates of deposit	$	1,750	1	—		1,751
Corporate bonds	6,180		—	(31	)	6,149
Total	$	7,930	1	(31	)	7,900

	June 30, 2014
(in thousands)	Amortized Cost		Gains in Accumulated Other Comprehensive Loss	Losses in Accumulated Other Comprehensive Loss	Estimated Fair Value
Common stock	$	14,350	914	—	15,264

Realized gains or losses on investments are recorded in our consolidated statements of operations within other income. Upon the sale of a security classified as available-for-sale, the security’s specific unrealized gain (loss) is reclassified out of accumulated other comprehensive loss into earnings based on the specific identification method. During the six months ended June 30, 2015 and 2014, there were no reclassifications from accumulated other comprehensive loss into earnings.

The contractual maturities of available-for sale securities were as follows:

	June 30, 2015
(in thousands)	Less than 12 months		1-3 Years	Over 3 Years	Total
Certificates of deposit	$	1,751	—	—	1,751
Corporate bonds	457		4,171	1,521	6,149
Total	$	2,208	4,171	1,521	7,900

	June 30, 2015
(in thousands)	Amortized Cost		Gains in Accumulated Other Comprehensive Loss	Losses in Accumulated Other Comprehensive Loss		Estimated Fair Value
Certificates of deposit	$	1,750	1	—		1,751
Corporate bonds	6,180		—	(31	)	6,149
Total	$	7,930	1	(31	)	7,900

	June 30, 2014
(in thousands)	Amortized Cost		Gains in Accumulated Other Comprehensive Loss	Losses in Accumulated Other Comprehensive Loss	Estimated Fair Value
Common stock	$	14,350	914	—	15,264