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SUPPLEMENTAL CONSOLIDATED FINANCIAL STATEMENT INFORMATION – Impact of Adoption of Topic 606 on Condensed Consolidated Statements of Operations and Comprehensive Loss (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
May 01, 2018
Mar. 31, 2018
Mar. 31, 2017
Operating revenues   $ 49,880 $ 42,366
Operating costs:      
Operating expenses   38,759 39,974
Loss from operations   (1,640) (12,139)
Net loss   $ (1,709) $ (9,152)
Basic and diluted loss per share of common stock     $ (0.40)
Weighted average equivalent common shares outstanding - assuming dilution   22,879,805 22,742,516
Subsequent Event      
Common stock dividend declared, percentage of shares outstanding 5.00%    
ASU 2014-09 | As Previously Reported      
Operating revenues     $ 41,927
Operating costs:      
Operating expenses     39,537
Loss from operations     (12,141)
Net loss     $ (9,154)
Basic and diluted loss per share of common stock     $ (0.42)
Weighted average equivalent common shares outstanding - assuming dilution     21,659,539
ASU 2014-09 | Adjustments      
Operating revenues     $ 439
Operating costs:      
Operating expenses     437
Loss from operations     2
Net loss     $ 2
Excluding stock dividend      
Operating costs:      
Basic and diluted loss per share of common stock     $ 0.02
Weighted average equivalent common shares outstanding - assuming dilution     1,082,977