Fair Value Disclosures (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Assets:
Available for sale securities	$ 6,540,000	$ 5,419,000
Interest rate swap agreements	937,000
Foreign currency exchange contracts	83,000
Assets:	7,560,000	5,419,000
Liabilities:
Interest rate swap agreements		456,000
Foreign currency exchange contracts	14,000	4,000
Contingent consideration	1,581,000	4,000,000
Liabilities:	1,595,000	4,460,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Available for sale securities	6,540,000	5,419,000
Interest rate swap agreements	0
Foreign currency exchange contracts	0
Assets:	6,540,000	5,419,000
Liabilities:
Interest rate swap agreements		0
Foreign currency exchange contracts	0	0
Contingent consideration	0	0
Liabilities:	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Available for sale securities	0	0
Interest rate swap agreements	937,000
Foreign currency exchange contracts	83,000
Assets:	1,020,000	0
Liabilities:
Interest rate swap agreements		456,000
Foreign currency exchange contracts	14,000	4,000
Contingent consideration	0	0
Liabilities:	14,000	460,000
Significant Unobservable Inputs (Level 3)
Assets:
Available for sale securities	0	0
Interest rate swap agreements	0
Foreign currency exchange contracts	0
Assets:	0	0
Liabilities:
Interest rate swap agreements		0
Foreign currency exchange contracts	0	0
Contingent consideration	1,581,000	4,000,000
Liabilities:	$ 1,581,000	$ 4,000,000