Available-for-sale securities

3 Months Ended

Mar. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Available-for-Sale Securities

Available-for-sale securities consist of investments held by the Company's wholly-owned captive insurance subsidiary, which is required to maintain statutory minimum capital and surplus; therefore its access to these securities may be limited. Available-for-sale securities are included in other assets in the accompanying Consolidated Balance Sheets. The Company had no available-for-sale securities as of March 31, 2015.

	March 31, 2016
(in thousands)	Amortized Cost		Gains in Accumulated Other Comprehensive Loss	Losses in Accumulated Other Comprehensive Loss		Estimated Fair Value
Certificates of deposit	$	1,000	4	—		1,004
Corporate bonds	6,969		—	(83	)	6,886
Total	$	7,969	4	(83	)	7,890

Realized gains or losses on investments are recorded in the Company's consolidated statements of operations within net investment income. Upon the sale of a security classified as available-for-sale prior to its maturity, 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 three months ended March 31, 2016 and 2015, there were no such reclassifications from accumulated other comprehensive loss into earnings.

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

	March 31, 2016
(in thousands)	Less than 12 months		1-3 Years	Over 3 Years	Total
Certificates of deposit	$	750	—	254	1,004
Corporate bonds	1,004		4,883	999	6,886
Total	$	1,754	4,883	1,253	7,890