Employee Benefit Plans - Schedule of Changes in Fair Value of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 25,190	$ 28,360	$ 26,868
Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,834	5,460
Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10,006	10,606
Foreign Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	291	213
Common Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9,479	11,099
Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,580	982
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19,921	22,169
Fair Value, Inputs, Level 1 | Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 1 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10,006	10,606
Fair Value, Inputs, Level 1 | Foreign Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	291	213
Fair Value, Inputs, Level 1 | Common Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9,479	11,099
Fair Value, Inputs, Level 1 | Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	145	251
Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,269	6,191
Fair Value, Inputs, Level 2 | Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,834	5,460
Fair Value, Inputs, Level 2 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 | Foreign Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 | Common Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 | Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,435	731
Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 | Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 | Foreign Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 | Common Stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 | Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0