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Supplemental Disclosure of Cash Flow Information (Tables)
3 Months Ended
Jun. 30, 2012
Supplemental Cash Flow Information Abstract  
Schedule Of Purchase Price Allocation [Table Text Block]
Fair value of assets acquired$12,484,000
Goodwill acquired 40,108,000
Cash paid, net of cash acquired (50,919,000)
   
Liabilities assumed$1,673,000

Fair value of assets acquired$ 6,110,000
Goodwill acquired  27,271,000
Cash paid, net of cash acquired  (32,701,000)
   
Liabilities assumed$ 680,000