American Science and Engineering, Inc. Reports Results for Fourth Quarter and Fiscal Year 2012 and Declares a Quarterly Dividend - Page 14

nb bwalignr"> (568 ) (2,034 ) Accrued expenses and other liabilities (4,530 ) 4,344   Net cash provided by operating activities 51,019   33,204     Cash flows from investing activities: Purchases of short-term investments (283,685 ) (160,422 ) Proceeds from sales and maturities of short-term investments 220,293 192,406 Proceeds from sale of fixed assets 51 3 Purchases of property and equipment (5,211 ) (5,304 ) Net cash provided by (used for) investing activities (68,552 ) <