Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

Supplemental Cash Flow Information

	(In thousands) Years Ended December 31,
	2017		2016		2015
Interest paid	$	7,307	$	6,877	$	26,501
Taxes paid	$	3,125	$	9,778	$	1,150
Non-cash activities:
Purchases of property and equipment not paid	$	2,104	$	3,241	$	1,549

Weighted Average Number of Shares Outstanding Used to Compute Earnings Per Share

The net earnings (loss) and weighted-average number of common shares outstanding used to compute earnings (loss) per share were as follows:

	(In thousands, except per share data) Years Ended December 31,
	2017		2016		2015
Net income (loss)	$	20,077	$	25,261	$	(74,879	)
Weighted-average number of common shares outstanding
Basic weighted-average common shares outstanding	11,290		11,151		11,047
Dilutive potential common shares	268		148		—
Diluted weighted-average common shares outstanding	11,558		11,299		11,047
Earnings (loss) per share
Basic	$	1.78	$	2.27	$	(6.78	)
Diluted	$	1.74	$	2.24	$	(6.78	)

Weighted Average Number of Shares Outstanding Excluded from Computation of Diluted Earnings

Potentially dilutive stock options and stock units to purchase common stock, as shown below, were excluded from the computation of diluted earnings per share because their inclusion would have been anti-dilutive. However, these shares may be potentially dilutive common shares in the future.

	(In thousands) Years Ended December 31,
	2017	2016	2015
Stock options and stock units	126	553	778