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Subsequent Event	3 Months Ended
	Mar. 31, 2021
Subsequent Event
Subsequent Event	Note 13.  Subsequent Event ​ On April 21, 2021, we entered into a Reimbursement Agreement and Continuing Indemnity Relating to Standby Letters of Credit/Letters of Guarantee (the “Reimbursement Agreement’) with one of the lenders under our Credit Agreement (the “Issuing Bank”). Pursuant to the Reimbursement Agreement, the Issuing Bank has agreed to issue from time to time, at the Company’s request, standby letters of credit or letters of guarantee in an amount not to exceed $50.0 million in the aggregate. ​

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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