Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2014

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]

	Balance at		Additions Charged to						Balance
	Beginning		Costs and		Other				at End
Year ended December 31, 2014	of Period		Expenses		Accounts		Deductions		of Period
Deferred tax asset valuation allowance	$	65,272	$	6,667	$	-	$	-	$	71,939
Year ended December 31, 2013
Deferred tax asset valuation allowance	$	60,041	$	5,231	$	-	$	-	$	65,272
Year ended December 31, 2012
Deferred tax asset valuation allowance	$	54,788	$	5,253	$	-	$	-	$	60,041