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Stock Compensation (Tables)
 12 Months Ended
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of the components of stock-based compensation expense in the condensed consolidated statements of operations
The following table summarizes the components of stock-based compensation expense in the consolidated statements of (loss) income for the year ended December 31, 2018, 2017, and 2016 were as follows:
 
Year Ended Year Ended
December 31, 2018		Year Ended Year Ended
December 31, 2017		Year Ended Year Ended
December 31, 2016
(in thousands)Amount Amount Amount 
Cost of sales$191 $191 $— 
Selling, general, and administrative expenses$2,413 $2,127 $3,423 
Research and development expenses293 299 261 
Total$2,897 $2,617 $3,684 
Summary of the status of time-based stock options A summary of the status of the Company’s time-based stock options (“Options”) for the years ended December 31, 2018 and 2017 were as follows: 
 
Number of
Share
Underlying
Awards
Weighted-Average
Exercise Price
Weighted-Average
Remaining
Contractual
Term (years)
Aggregate
Intrinsic Value 
(In thousands)
Outstanding at January 1, 2017751,973 $10.52 8.91$— 
Granted181,800 4.37 0— 
Exercised— — 0— 
Forfeited or expired(6,875)9.78 0— 
Outstanding at December 31, 2017926,898 $8.72 8.18$— 
Exercisable at December 31, 2017445,449 3.69 7.91— 
Vested and expected to vest at December 31, 2017926,898 $8.72 8.18$— 
Outstanding at January 1, 2018926,898 $8.72 8.18$— 
Granted201,535 7.15 9.37— 
Exercised— — 0— 
Forfeited or expired(146,109)4.66 8.63— 
Outstanding at December 31, 2018982,324 $9.38 7.18$— 
Exercisable at December 31, 2018721,869 10.57 6.78— 
Vested and expected to vest at December 31, 2018982,324 $9.38 7.18$— 
Summary of the time-based SARs A summary of the Company’s time-based SARs as of December 31, 2018 is as follows:
 
Number
of
Awards
Weighted-Average
Exercise Price
Weighted-Average
Remaining
Contractual
Term (years)
Aggregate
Intrinsic Value
(In thousands)
Outstanding at January 1, 2017 158,125 $12.00 8.71$— 
Granted9,350 2.39 0— 
Exercised— — 0— 
Forfeited or expired(91,850)10.88 0— 
Outstanding at December 31, 201775,625 9.83 7.75— 
Exercisable at December 31, 2017— — 0— 
Vested and expected to vest at December 31, 201775,625 $9.83 7.75$— 
Outstanding at January 1, 201875,625 $9.83 7.75$— 
Granted30,300 7.35 9.24— 
Exercised— — 0— 
Forfeited or expired— — 0— 
Outstanding at December 31, 2018105,925 $9.12 6.75$— 
Exercisable at December 31, 2018103,125 8.92 6.68— 
Vested and expected to vest at December 31, 2018105,925 $9.12 6.75$— 
Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of fair value assumptions
Year Ended December 31,
2018		Year Ended December 31,
2017
Weighted average grant date fair value$3.54 $2.39 
Risk-free interest rate2.56%  2.08%  
Expected life (years)6.006.00
Estimated volatility factor47.52%  57.14%  
Expected dividendsNone  None  
Stock appreciation rights (SAR)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of fair value assumptions The assumptions used to value the SARs as of their issuance dates and as of December 31, 2018 are presented below:
 
As of December 31,
2018		As of December 31,
2017
Fair value of awards$0.29 $2.21 
Risk-free interest rate2.47 %2.22 %
Expected life (years)3.343.95
Estimated volatility factor48.22 %54.5 %
Expected dividendsNone  None  
Restricted stock units (RSU)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of unvested performance shares A summary of the Company’s restricted stock awards as of December 31, 2018 is as follows: 
 
Number of
Shares
Weighted-Average
Grant Date Fair 
Value
Non-vested Restricted Stock & RSUs at January 1, 2017296,983 $5.66 
Granted 513,851 4.32 
Vested (63,744)5.46 
Forfeited or expired (302,283)6.26 
Non-vested Restricted Stock & RSUs at December 31, 2017444,807 $5.35 
Non-vested Restricted Stock & RSUs at January 1, 2018444,807 $5.35 
Granted 554,699 7.06 
Vested (152,538)5.30 
Forfeited or expired (178,272)5.43 
Non-vested Restricted Stock and RSUs at December 31, 2018668,696 $6.76 
Phantom stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of unvested performance shares A summary of the Company’s Phantom Stock Awards as of December 31, 2018 is as follows:
 
Number of
Awards
Weighted-Average
Grant Date Fair 
Value
Non-vested phantom stock awards at January 1, 2017109,809 $6.32 
Granted  90,000 4.35 
Vested — — 
Forfeited or expired (121,009)6.34 
Non-vested phantom stock awards at December 31, 201778,800 $5.91 
Non-vested phantom stock awards at January 1, 201878,800 $5.91 
Granted  65,450 7.35 
Vested (17,519)4.70 
Forfeited or expired (14,548)7.68 
Non-vested phantom stock awards at December 31, 2018112,183 $6.71 
Director shares  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of fair value assumptions
The fair value of the Director Shares was estimated using a Monte Carlo Simulation Model that used the following assumptions:
 
Risk-free interest rate1.96%  
Expected life (years)6.47
Estimated volatility factor31.16%  
Expected dividendsNone 
Restricted stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of nonvested shares A summary of the Company’s time-based restricted stock awarded to the Board of Directors for the year ended December 31, 2018 is as follows:
 
Number of
Shares
Weighted-Average
Grant Date Fair 
Value
Non-vested time-based restricted stock at January 1, 201714,524 $6.22 
Granted  96,853 5.42 
Vested (104,115)5.40 
Forfeited or expired — — 
Non-vested time-based restricted stock at December 31, 20177,262 $5.48 
Non-vested time-based restricted stock at January 1, 20187,262 $5.48 
Granted  85,890 6.75 
Vested (28,783)5.40 
Forfeited or expired — — 
Non-vested time-based restricted stock at December 31, 201864,369 $7.21