Debt and Interest (Tables)

3 Months Ended

Mar. 31, 2017

Short-term Borrowings, Long-Term Debt, and Interest Expense: [Abstract]

Short-Term Borrowings and Long-Term Debt [Table Text Block]

Short-term borrowings and long-term debt consist of the following:

	March 31, 2017		December 31, 2016
Revolver borrowings under the credit facility due 2022	$	189,000	$	185,000
Total borrowings	$	189,000	$	185,000
Less current portion	—		—
Long-term debt	$	189,000	$	185,000

Components of Interest Expense, Net [Table Text Block]

Interest expense, net consists of the following:

	Three months ended
	March 31, 2017			March 31, 2016
Interest expense	$	1,315		$	1,711
Deferred financing cost	107			168
Interest income	(9		)	(14		)
Less: amount capitalized for capital projects	(60		)	(66		)
Total interest expense, net	$	1,353		$	1,799