Stockholders' Equity	12 Months Ended
Dec. 31, 2020
Equity [Abstract]
Stockholders' Equity	10. Stockholders’ Equity At December 31, 2020 and 2019, treasury stock consisted of 4,185,242 shares and 3,979,735 shares of common stock, respectively. During 2020, 173,956 shares of Company common stock were purchased in the open market. In addition, 42,733 shares were received to settle employees’ minimum statutory withholding taxes related to performance stock awards, exercised SARs and deferred compensation distributions. Also, 11,182 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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: 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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