Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Additional Information (Detail)

v2.4.1.9
Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
12 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Jan. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]      
Goodwill $ 41,008,000us-gaap_Goodwill $ 45,150,000us-gaap_Goodwill $ 45,103,000us-gaap_Goodwill
Goodwill, Impairment charges 0us-gaap_GoodwillImpairmentLoss    
Amortization of intangible assets $ 5,200,000seac_AmortizationExpenseChargedToCostOfProductRevenueAndOperatingExpense $ 4,600,000seac_AmortizationExpenseChargedToCostOfProductRevenueAndOperatingExpense $ 6,400,000seac_AmortizationExpenseChargedToCostOfProductRevenueAndOperatingExpense