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Other Long-Term Assets	12 Months Ended
Other Long-Term Assets	Dec. 31, 2019
Other Long Term Assets [Abstract]
Other Long-Term Assets	Other Long-Term Assets As of December 31, 2019, other long-term assets included $1.4 million related to deferred debt-issuance costs related to the revolving credit facility and $3.9 million related to the long-term portion of certain software and maintenance contracts. As of December 31, 2018, other long-term assets included $1.8 million related to deferred debt-issuance costs related to the revolving credit facility, $1.8 million related to the long-term portion of certain software and maintenance contracts and a derivative asset of $1.7 million.