Summary of Operations and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

For the three years ended December 31, 2015, 2014 and 2013, options and share grants outstanding totaling approximately 1 million shares, 2 million shares and 2 million shares have been excluded from the computation of diluted earnings per share because their effect was anti-dilutive.

	Twelve Months Ended December 31,
	2015		2014		2013
Earnings (numerator)
Net income attributable to common stockholders	$	24,274	$	63,678	$	26,532
Shares (denominator)
Weighted average common shares outstanding (basic)		48,210		47,184		46,363
Dilutive effect of stock options and stock awards outstanding		1,290		1,410		1,295
Adjusted weighted average common shares outstanding (diluted)		49,500		48,594		47,658
Earnings per share attributable to common stockholders
Basic	$	0.50	$	1.35	$	0.57
Diluted	$	0.49	$	1.31	$	0.56

Component of Comprehensive Income

There is no income tax expense or benefit associated with each component of comprehensive income. As of December 31, the accumulated balance for each component of comprehensive income is as follows:

	2015			2014
Translation adjustment	$	(36,164	)	$	(16,357	)
Unrealized loss on defined benefit plan	$	(31,320	)	$	(35,719	)
Unrealized foreign currency losses	$	(16,932	)	$	(16,326	)