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Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions We consider Regions Bank ("Regions") to be a related party because Regions provides financing to the Company via a syndicated commercial banking facility (refer to Note 5 to these Consolidated Financial Statements), and because Regions is also a customer to whom the Company sells products and services. Revenues recognized from Regions were $301 thousand, $280 thousand, and $300 thousand for each of the years ending December 31, 2017, 2016, and 2015, respectively. Accounts receivable due from Regions were and $60 thousand and $161 thousand at December 31, 2017 and 2016, respectively.