Accounts Receivable and Other Receivables (Tables)

6 Months Ended

Jun. 30, 2016

Receivables [Abstract]

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

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

	June 30, 2016			December 31, 2015
Accounts receivable, gross	$	43,100		$	61,045
Less: allowance for doubtful accounts	(95		)	(103		)
Accounts receivable, net	$	43,005		$	60,942