XML 22 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6
Inventories (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Components of Inventories [Abstract]    
Raw materials $ 7,541,000 $ 8,199,000
Work-in-process 5,010,000 4,742,000
Finished goods 377,000 330,000
TOTAL $ 12,928,000 $ 13,271,000