v3.8.0.1
Consolidated Balance Sheets (Parentheticals) - USD ($)
shares in Thousands, $ in Thousands
Apr. 01, 2018
Dec. 31, 2017
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]    
Allowance for Doubtful Accounts Receivable, Current $ 429 $ 592
Common Stock, Par or Stated Value Per Share $ 0.01 $ 0.01
Common Stock, Shares Authorized 100,000 100,000
Common stock issued (in shares) 7,467 7,376
Common Stock, Shares, Outstanding 7,467 7,376