Accounts Receivable and Other Receivables (Tables)

6 Months Ended

Jun. 30, 2015

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Accounts receivable balances consisted of the following (in thousands):

	June 30, 2015			December 31, 2014
Accounts receivable, gross	$	39,060		$	43,969
Less: allowance for doubtful accounts	(109		)	(124		)
Accounts receivable, net	$	38,951		$	43,845