Shareholders' Equity

12 Months Ended

Dec. 31, 2018

Stockholders' Equity Note [Abstract]

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



	As of December 31,
	2018	2017
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	56,786,849	56,632,488
Shares outstanding	32,750,727	32,938,466
Treasury stock
Shares held	24,036,122	23,694,022

We use the cost method to account for our common stock purchases. During the year ended December 31, 2018 we purchased 342,100 shares for $9,440. During the year ended December 31, 2017, we did not purchase any shares of common stock under our board-authorized share repurchase program. Approximately $8,114 was available for future purchases under the previously authorized stock repurchase program that was approved by our Board of Directors in April 2015. As discussed in Note 1, the Board or Directors authorized a new stock repurchase program with a maximum dollar limit of $25 million that replaced the previous program.

A roll forward of common shares outstanding is as follows:



	As of December 31,
	2018		2017
Balance at beginning of the year	32,938,466		32,762,494
Repurchases	(342,100	)	—
Restricted stock unit issuances	154,361		175,972
Balance at end of period	32,750,727		32,938,466