Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of effective tax rates (Details)

v3.3.1.900
Income Taxes - Reconciliation of effective tax rates (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Income before provision for income taxes $ 292 $ 6,292 $ 2,759
Federal statutory tax expense 102 2,202 966
State income taxes, net of Federal benefit 604 666 201
Net state impact of deferred rate change 55 264 (69)
Non deductible expenses 933 764 818
Impact of reserve for uncertain tax positions (1,772) (977) 1,190
Stock-based compensation expense 402 415 373
Energy efficiency preferences (3,280) (9,517) (3,280)
Foreign items and rate differential 1,556 719 349
Valuation allowance 4,255 1,408 (276)
Miscellaneous (12) (35) 73
Income tax (benefit) provision $ 2,843 $ (4,091) $ 345
Effective tax rate:      
Federal statutory rate expense 35.00% 35.00% 35.00%
State income taxes, net of federal benefit 206.80% 10.60% 7.30%
Net state impact of deferred rate change 18.80% 4.20% (2.50%)
Non deductible expenses 319.50% 12.10% 29.60%
Impact of reserve for uncertain tax positions (606.80%) (15.50%) 43.10%
Stock-based compensation expense 137.70% 6.60% 13.50%
Energy efficiency preferences (1123.30%) (151.30%) (118.90%)
Foreign items and rate differential 532.90% 11.40% 12.60%
Valuation allowance 1457.20% 22.40% (10.00%)
Miscellaneous (4.10%) (0.60%) 2.60%
Effective tax rate 973.70% (65.10%) 12.30%