Stockholders' Equity	12 Months Ended
Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity	10. Stockholders’ Equity At December 31, 2018 and 2017, treasury stock consisted of 3,803,043 shares and 3,561,509 shares of common stock, respectively. During 2018, 165,679 shares of Company common stock were purchased in the open market and 40,304 shares of Company common stock were purchased from Company Retirement Plans. In addition, 43,961 shares were received to settle employees’ minimum statutory withholding taxes related to performance stock awards, exercised SARs and deferred compensation distributions. Also, 8,410 shares of treasury stock were distributed to participants under the Company’s deferred compensation plan.

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

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