Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2015

Accumulated Other Comprehensive Income [Abstract]

Schedule of Accumulated Other Comprehensive Income [Table Text Block]

				Foreign		Accumulated
		Net unrealized		currency		other
		investment		translation		comprehensive
		gains		adjustment		income
Three months ended March 31, 2015
Balance at December 31, 2014		$	169,984	$	5,030	$	175,014
Other comprehensive income (loss)			4,233		(6,985)		(2,752)
	Balance at March 31, 2015	$	174,217	$	(1,955)	$	172,262