Fair Value Disclosures (Details) - USD ($) $ in Thousands		Jun. 30, 2016		Dec. 31, 2015
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		$ 8,047	[1]	$ 8,353	[2]
Prepaid Expenses and Other Current Assets [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Deferred compensation plan assets		1,000		900
Other Non-Current Assets [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Deferred compensation plan assets	[1]	7,000		7,500
Bond Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		1,643		1,772
Large Cap Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		2,318		2,686
International Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		1,384		1,449
Mid Cap Mutual Cap [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		922		530
Small Cap Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		507		425
Balanced Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		493		450
Money Market Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		780		1,041
Level 1 [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		8,047	[1]	8,353	[2]
Level 1 [Member] | Bond Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		1,643		1,772
Level 1 [Member] | Large Cap Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		2,318		2,686
Level 1 [Member] | International Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		1,384		1,449
Level 1 [Member] | Mid Cap Mutual Cap [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		922		530
Level 1 [Member] | Small Cap Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		507		425
Level 1 [Member] | Balanced Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		493		450
Level 1 [Member] | Money Market Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		780		1,041
Level 2 [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0	[1]	0	[2]
Level 2 [Member] | Bond Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 2 [Member] | Large Cap Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 2 [Member] | International Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 2 [Member] | Mid Cap Mutual Cap [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 2 [Member] | Small Cap Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 2 [Member] | Balanced Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 2 [Member] | Money Market Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 3 [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0	[1]	0	[2]
Level 3 [Member] | Bond Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 3 [Member] | Large Cap Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 3 [Member] | International Mutual Fund [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 3 [Member] | Mid Cap Mutual Cap [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 3 [Member] | Small Cap Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 3 [Member] | Balanced Mutual Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		0		0
Level 3 [Member] | Money Market Funds [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value of assets		$ 0		$ 0

[1] As of June 30, 2016, $1.0 million and $7.0 million are included in “Prepaid expenses and other current assets” (liability offset in “Other accrued expenses and other current liabilities”) and “Other non-current assets” (liability offset in “Deferred compensation”), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.

[2] (1) As of December 31, 2015, $0.9 million and $7.5 million are included in “Prepaid expenses and other current assets” (liability offset in “Other accrued expenses and other current liabilities”) and “Other non-current assets” (liability offset in “Deferred compensation”), respectively, in the consolidated balance sheets reflecting the non-qualified Deferred Compensation Plan assets.