Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2016

Stockholders' Equity Note [Abstract]

Summary of Share Count and Par Value Data Related to Shareholders' Equity

Share count and par value data related to shareholders’ equity are as follows:

	As of
	June 30,	December 31,
	2016	2015
Preferred Stock
Par value per share	No par value	No par value
Shares authorized	25,000,000	25,000,000
Shares outstanding	—	—
Common Stock
Par value per share	No par value	No par value
Shares authorized	75,000,000	75,000,000
Shares issued	56,452,983	56,242,499
Shares outstanding	32,758,961	32,548,477
Treasury stock
Shares held	23,694,022	23,694,022

Summary of Common Shares Outstanding

A roll-forward of common shares outstanding is as follows:

	Six Months Ended
	June 30,	June 28,
	2016	2015
Balance at the beginning of the year	32,548,477	33,392,060
Repurchases	—	(626,882	)
Shares issued upon exercise of stock options	—	5,200
Restricted share issuances	210,484	133,353
Balance at the end of the period	32,758,961	32,903,731

Certain potentially dilutive restricted stock units are excluded from diluted earning per share because they are anti-dilutive. The number of awards that were anti-dilutive at June 30, 2016 and June 28, 2015 were 11,600 and 0, respectively.