Employee Retirement Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Contributory retirement (401(k)) savings plans
Company contributions	$ 174	$ 184	$ 156
Plan
Employee retirement plan
Unfunded projected benefit obligation	0				$ 275	$ (10)
Comprehensive income (loss), net of tax	602	81	197
Comprehensive income (loss), tax expense (benefit)	344	46	112
Contributions by the entity	233	$ 0	0
Current target allocations
Target allocations (as a percent)		100.00%
Pension plan assets at the fair value
Fair value of plan assets	1,862	$ 1,981	1,981		1,862	1,981
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	2,137	1,991
Interest cost	44	87	77
Actuarial loss (gain) on plan assets	(93)	171
Benefits paid	(2,088)	(112)
Projected benefit obligation at end of year		2,137	1,991
Change in plan assets:
Fair value of plan assets at beginning of year	1,862	1,981
Employer contribution	233	0	0
Actual (loss) gain on plan assets	(7)	(7)
Benefits paid	(2,088)	(112)
Fair value of plan assets at end of year		$ 1,862	1,981
Funded status
Projected benefit obligation, pre-settlement				$ 2,039
Projected benefit obligation, settlement				(2,039)
Fair value of plan assets, pre-settlement				2,039
Fair value of plan assets, settlement				$ (2,039)
Underfunded status	0				(275)	$ 10
Accumulated Benefit Obligation
Accumulated benefit obligation					2,137
Liability recognized on the consolidated balance sheets
Accrued benefit cost	0				$ 275
Weighted-average assumptions used in the measurement of benefit obligation
Discount rate (as a percent)					3.75%
Expected long-term return on plan assets (as a percent)		2.00%
Components of the net periodic benefit cost
Interest cost	44	$ 87	77
Expected return on plan assets	(18)	(38)	(128)
Amortization of net actuarial loss	65	65	80
Net periodic benefit cost	91	114	29
Settlement charge	814
Total net periodic benefit cost	905	114	$ 29
Plan | Level 1
Pension plan assets at the fair value
Fair value of plan assets	1,862	1,862			$ 1,862
Change in plan assets:
Fair value of plan assets at beginning of year	1,862
Fair value of plan assets at end of year		$ 1,862
Plan | Pooled fixed income funds
Current target allocations
Target allocations (as a percent)		42.10%
Plan | Pooled fixed income funds | Level 1
Pension plan assets at the fair value
Fair value of plan assets	785	$ 785			785
Change in plan assets:
Fair value of plan assets at beginning of year	785
Fair value of plan assets at end of year		$ 785
Plan | Cash and cash equivalents
Current target allocations
Target allocations (as a percent)		57.90%
Plan | Cash and cash equivalents | Level 1
Pension plan assets at the fair value
Fair value of plan assets	1,077	$ 1,077			$ 1,077
Change in plan assets:
Fair value of plan assets at beginning of year	$ 1,077
Fair value of plan assets at end of year		$ 1,077