Investments (Tables)

12 Months Ended

Dec. 31, 2014

Investments, All Other Investments [Abstract]

Schedule of Cost and Equity Method Investments [Table Text Block]

The following table summarizes the Company's investments (dollars in thousands):



	December 31, 2014		Percent Ownership of Voting Stock					December 31, 2013		Percent Ownership of Voting Stock
Cost and equity method investments:
Cost method investments	$	15,630	6	%	to	19	%	$	15,788	6	%	to	19	%
Equity method investments	1,231		21	%	to	50	%	1,690		21	%	to	50	%
Total cost and equity method investments	16,861							17,478
Available-for-sale securities:
Convertible debt securities	2,527							3,174
Redeemable preferred shares	4,910		17	%	to	19	%	—		19	%
Total available-for-sale securities	7,437							3,174
Total investments	$	24,298						$	20,652

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

The following table summarizes the amortized cost, gross unrealized gain, gross unrealized loss and fair value of the Company's available-for-sale securities as of December 31, 2014 and 2013, respectively (in thousands):



	December 31, 2014								December 31, 2013
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value		Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Available-for-sale securities:
Convertible debt securities	$	2,030	$	497	$	—	$	2,527	$	3,370	$	—	$	(196	)	$	3,174
Redeemable preferred shares	4,599		311		—		4,910		—		—		—			—
Total available-for-sale securities	$	6,629	$	808	$	—	$	7,437	$	3,370	$	—	$	(196	)	$	3,174