Amarin Thai Cuisine, one of Sacramento's earliest Thai restaurants, has gone dark after the owners closed last week. On Jan. 19, the family-run restaurant shut its doors at the corner of I and 12th streets, just a few blocks from government buildings housing thousands of state, city, county and federal employees. Downtown workers made up the bulk of Amarin's customers during weekday lunches. "That was our favorite," said downtown resident Gloria Burt, an art show curator for Sacramento's Central Library. "The food was really, really good. We're unhappy it's gone." Like many other businesses in the central city, Amarin was hurt by the recession and state employee furloughs. But a loss of