Annual report pursuant to Section 13 and 15(d)

UNAUDITED QUARTERLY FINANCIAL DATA (Details)

v2.4.1.9
UNAUDITED QUARTERLY FINANCIAL DATA (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Quarterly Financial Information Disclosure [Abstract]                      
Revenue $ 147,798us-gaap_Revenues $ 142,063us-gaap_Revenues $ 135,106us-gaap_Revenues $ 128,128us-gaap_Revenues $ 127,968us-gaap_Revenues $ 145,869us-gaap_Revenues $ 131,479us-gaap_Revenues $ 147,849us-gaap_Revenues $ 553,095us-gaap_Revenues $ 553,165us-gaap_Revenues $ 587,439us-gaap_Revenues
Gross margin 62,164us-gaap_GrossProfit 65,067us-gaap_GrossProfit 61,929us-gaap_GrossProfit 55,526us-gaap_GrossProfit 52,020us-gaap_GrossProfit 61,373us-gaap_GrossProfit 56,392us-gaap_GrossProfit 69,835us-gaap_GrossProfit 244,686us-gaap_GrossProfit 239,620us-gaap_GrossProfit 240,561us-gaap_GrossProfit
Net income (loss) $ 12,905us-gaap_NetIncomeLoss $ 6,931us-gaap_NetIncomeLoss $ 1,248us-gaap_NetIncomeLoss $ (4,324)us-gaap_NetIncomeLoss $ (14,404)us-gaap_NetIncomeLoss $ (2,458)us-gaap_NetIncomeLoss $ (7,893)us-gaap_NetIncomeLoss $ 3,281us-gaap_NetIncomeLoss $ 16,760us-gaap_NetIncomeLoss $ (21,474)us-gaap_NetIncomeLoss $ (52,179)us-gaap_NetIncomeLoss
Basic net income (loss) per share $ 0.05us-gaap_EarningsPerShareBasic $ 0.03us-gaap_EarningsPerShareBasic $ 0.00us-gaap_EarningsPerShareBasic $ (0.02)us-gaap_EarningsPerShareBasic         $ 0.07us-gaap_EarningsPerShareBasic $ (0.09)us-gaap_EarningsPerShareBasic $ (0.22)us-gaap_EarningsPerShareBasic
Diluted net income (loss) per share $ 0.04us-gaap_EarningsPerShareDiluted $ 0.03us-gaap_EarningsPerShareDiluted $ 0.00us-gaap_EarningsPerShareDiluted $ (0.02)us-gaap_EarningsPerShareDiluted         $ 0.06us-gaap_EarningsPerShareDiluted $ (0.09)us-gaap_EarningsPerShareDiluted $ (0.22)us-gaap_EarningsPerShareDiluted
Basic and diluted net income (loss) per share         $ (0.06)us-gaap_EarningsPerShareBasicAndDiluted $ (0.01)us-gaap_EarningsPerShareBasicAndDiluted $ (0.03)us-gaap_EarningsPerShareBasicAndDiluted $ 0.01us-gaap_EarningsPerShareBasicAndDiluted