Intangibles (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Future Amortization Expense, Year One	$ 1,132,000
Future Amortization Expense, Year Two	1,210,000
Future Amortization Expense, Year Three	560,000
Future Amortization Expense, Year Four	538,000
Future Amortization Expense, Year Five	538,000
Accumulated Amortization	4,957,000	6,554,000
Intangible Assets Gross	13,678,000	14,775,000
Trade Secrets [Member]
Accumulated Amortization	992,000	1,127,000
Intangible Assets Gross	1,518,000	1,781,000
Patents [Member]
Accumulated Amortization	1,807,000	2,510,000
Intangible Assets Gross	4,435,000	3,862,000
Noncompete Agreements [Member]
Accumulated Amortization	1,975,000	2,625,000
Intangible Assets Gross	3,286,000	4,578,000
trade names finite lived [Member]
Accumulated Amortization	183,000	292,000
Finite-Lived Intangible Asset, Useful Life	20 years
Intangible Assets Gross	544,000	662,000
Trade name infinite lived [Member]
Accumulated Amortization	0	0
Intangible Assets Gross	$ 3,895,000	$ 3,892,000
Minimum [Member] | Trade Secrets [Member]
Finite-Lived Intangible Asset, Useful Life	2 years
Minimum [Member] | Patents [Member]
Finite-Lived Intangible Asset, Useful Life	4 years
Minimum [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum [Member] | Trade Secrets [Member]
Finite-Lived Intangible Asset, Useful Life	20 years
Maximum [Member] | Patents [Member]
Finite-Lived Intangible Asset, Useful Life	10 years
Maximum [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life	5 years