Common Stock and Treasury Stock (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Class A Common Stock [Member]
Common Stock [Line Items]
Balance, shares	6,409,000	6,369,000
Exercised options	7,000	9,000
Conversion of shares		1,000
Issuance of restricted stock		30,000
Balance, shares	6,416,000	6,409,000
Class B Common Stock [Member]
Common Stock [Line Items]
Balance, shares	816,000	797,000
Exercised options	0	0
Conversion of shares		(1,000)
Issuance of restricted stock		20,000
Balance, shares	816,000	816,000