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Filing Description Date Filed Sorted Descending Size  
8-K current report May 14, 2013 17.7 KB  
4 christenson, james e May 13, 2013 24.5 KB  
4 christenson, james e May 6, 2013 33.7 KB  
8-K current report May 2, 2013 474.9 KB  
8-K current report Apr 24, 2013 39.5 KB  
10-Q quarterly report Apr 11, 2013 313.9 KB  
4 walker, brian c Apr 1, 2013 23.8 KB  
4 griswell, j barry Apr 1, 2013 22.1 KB  
4 bylsma, gregory j Apr 1, 2013 27.6 KB  
4 andringa, mary vermeer Apr 1, 2013 22.2 KB  
8-K current report Mar 20, 2013 81.9 KB  
8-K current report Feb 25, 2013 16.9 KB  
SC 13G/A amended statement of beneficial ownership Feb 13, 2013 26.4 KB  
SC 13G statement of beneficial ownership Feb 12, 2013 27.2 KB  
SC 13G/A amended statement of beneficial ownership Feb 8, 2013 26.2 KB  
4 pullen, curtis s Feb 6, 2013 37.8 KB  
SC 13G statement of beneficial ownership Feb 4, 2013 58.8 KB  
SC 13G statement of beneficial ownership Jan 29, 2013 29.4 KB  
4 walker, brian c Jan 25, 2013 37.3 KB  
4 lock, andrew j Jan 25, 2013 37.5 KB  
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